--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/piecrust/osutil.py	Tue Jul 28 21:36:59 2015 -0700
@@ -0,0 +1,35 @@
+import os
+import sys
+import glob as _glob
+import unicodedata
+
+
+if sys.platform == 'darwin':
+    def walk(top, **kwargs):
+        for dirpath, dirnames, filenames in os.walk(top, **kwargs):
+            dirpath = _from_osx_fs(dirpath)
+            dirnames = list(map(_from_osx_fs, dirnames))
+            filenames = list(map(_from_osx_fs, filenames))
+            yield dirpath, dirnames, filenames
+
+    def listdir(path='.'):
+        for name in os.listdir(path):
+            name = _from_osx_fs(name)
+            yield name
+
+    def glob(pathname):
+        pathname = _to_osx_fs(pathname)
+        matches = _glob.glob(pathname)
+        return list(map(_from_osx_fs, matches))
+
+    def _from_osx_fs(s):
+        return unicodedata.normalize('NFC', s)
+
+    def _to_osx_fs(s):
+        return unicodedata.ucd_3_2_0.normalize('NFD', s)
+
+else:
+    walk = sys.walk
+    listdir = sys.listdir
+    glob = _glob.glob
+